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app.js
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app.js
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var express = require('express');
var sio = require('socket.io');
var http = require('http');
var path = require('path');
var crypto = require('crypto');
var port = process.env.PORT || 3000;
var routes = require('./routes/index');
var app = express();
var server = http.createServer(app);
var io = sio(server);
var store = {
set: function(url, data) {
this[url] = data;
}
, setDown: function(url, down) {
if(!this[url]) return;
this[url].down = down;
}
, get: function(url) {
return this[url];
}
, delete: function(url) {
delete this[url];
}
}; //TODO change to redis store
var toHash = function(data) {
hash = crypto.createHash('md5');
hash.update(
data.name
+ data.size
+ data.type
+ data.date
, 'ascii');
return hash.digest('hex');
};
server.listen(port, function() {
console.log('Server listening on port ' + port);
});
io.on('connection', function(socket) {
console.log('connected');
socket.on('file', function(data) {
console.log(data);
var url = toHash(data);
console.log(url);
socket.url = url;
data.up = socket.id;
store.set(url, data);
socket.emit('hash', url);
});
socket.on('info', function(url) {
var data = store.get(url);
if(data) {
socket.emit('file', {
name: data.name
, size: data.size
, type: data.type
, date: data.date
});
} else {
socket.emit('message', 'File not found');
}
});
socket.on('download', function(url) {
var data = store.get(url);
if(data) {
store.setDown(url, socket.id);
var up = io.sockets.connected[data.up];
if(up) {
up.emit('download');
} else {
socket.emit('message', 'File not found');
}
} else {
socket.emit('message', 'File not found');
}
});
socket.on('next', function(url) {
var data = store.get(url);
if(data) {
var up = io.sockets.connected[data.up];
if(up) {
up.emit('next');
} else {
socket.emit('message', 'File not found');
}
} else {
socket.emit('message', 'File not found');
}
});
socket.on('upload', function(chunk) {
var data = store.get(socket.url);
if(data) {
var down = io.sockets.connected[data.down];
if(down) {
down.emit('upload', chunk);
} else {
socket.emit('message', 'Download interrupted');
}
} else {
socket.emit('message', 'Download interrupted');
}
});
socket.on('end', function() {
var data = store.get(socket.url);
if(data) {
var down = io.sockets.connected[data.down];
if(down) {
store.delete(socket.url);
down.emit('end');
} else {
socket.emit('message', 'Download interrupted');
}
} else {
socket.emit('message', 'Download interrupted');
}
});
socket.on('disconnect', function() {
store.delete(socket.url);
});
});
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'bower_components')));
app.use('/', routes);
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
/// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});